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Exploiting different combinations of complementary sensor's data for fingerprint-based indoor positioning in industrial environments

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Bibliographic Details
Summary:Wi-Fi fingerprinting is a popular technique for smartphone-based indoor positioning. However, well-known RF propagation issues create signal fluctuations that translate into large positioning errors. Large errors limit the usage of Wi-Fi fingerprinting in industrial environments, where the reliability of position estimates is a key requirement. One successful approach to deal with signal fluctuations is to average the signals collected simultaneously through independent Wi-Fi interfaces. Another successful approach is to average the estimates provided by models built on independent radio maps. This paper explores multiple combinations of both approaches and determines the procedure to select the best model based on them through a simulated environment. The evaluation of the proposed model in a real-world industrial scenario shows that the positioning error (according to different metrics including the 95th and 99th percentiles) is highly improved with respect to the traditional fingerprint.
Main Authors:Torres-Sospedra, Joaquín
Other Authors:Moreira, Adriano; Mendoza-Silva, German M.; Nicolau, Maria João; Matey-Sanz, Miguel; Silva, Ivo Miguel Menezes; Huerta, Joaquin; Pendão, Cristiano Gonçalves
Subject:Autonomous vehicle Ensemble models Indoor positioning Multiple interfaces RSSI Wi-Fi fingerprinting Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
Year:2019
Country:Portugal
Document type:conference paper
Access type:restricted access
Associated institution:Universidade do Minho
Language:English
Origin:RepositóriUM - Universidade do Minho
Description
Summary:Wi-Fi fingerprinting is a popular technique for smartphone-based indoor positioning. However, well-known RF propagation issues create signal fluctuations that translate into large positioning errors. Large errors limit the usage of Wi-Fi fingerprinting in industrial environments, where the reliability of position estimates is a key requirement. One successful approach to deal with signal fluctuations is to average the signals collected simultaneously through independent Wi-Fi interfaces. Another successful approach is to average the estimates provided by models built on independent radio maps. This paper explores multiple combinations of both approaches and determines the procedure to select the best model based on them through a simulated environment. The evaluation of the proposed model in a real-world industrial scenario shows that the positioning error (according to different metrics including the 95th and 99th percentiles) is highly improved with respect to the traditional fingerprint.

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